# MFS Research B (MFRBX)

> Source: Nexqual · https://nexqual.com/MFRBX · data as of 2026-10-24 00:03 UTC · cite as "Nexqual, MFS Research B (MFRBX), nexqual.com/MFRBX" · informational, not investment advice.

**Price:** USD 49.28 (-0.59% on the day) · last close of Oct 23, 2026; US market closed, not a live price. Prev close 49.57 · day 49.28–49.28 · 52w 42.45–55.34 · market cap null · NAS

## Key facts
- Total return with dividends: 1Y +7.4% vs S&P 500 +13.4%; 5Y +44.2% vs S&P 500 +76.9%.

## Total return (dividends reinvested)
|  | 1Y (from 2025-10-24) | 5Y (from 2021-10-25) |
|---|---|---|
| Total return | +7.4% | +44.2% |
| S&P 500 (SPY) | +13.4% | +76.9% |
| Per year | +7.4% | +7.6% |
| Volatility (annualized) | 12.8% | 16.1% |
| Max drawdown | -9.8% (Jan 2026→Mar 2026) | -23.5% (Dec 2021→Sep 2022) |

## Peers
MEGBX (MFS Growth Fund Class B) USD 110.87 -0.00% · MITBX (Massachusetts Investors Trust C) USD 35.95 -0.00% · MIGBX (Massachusetts Investors Growth ) USD 29.52 -0.00% · MTRBX (MFS Total Return Trust B) USD 20.39 +0.00% · MFRFX (Massachusetts Financial Researc) USD 60.51 +0.00%

## More
Full page: https://nexqual.com/MFRBX · Free keyless MCP server with the same data and citations: https://mcp.nexqual.com/mcp · Guide for agents: https://nexqual.com/agents · https://nexqual.com/llms.txt